Safe pill / Safe pill

The expired medicine cannot cure the disease, what's worse, they will cause side effects. In this design, we add a kind of edible pigment in the red part of the capsule. As time goes by, the pigment will fade away slowly. When the medicine has exceeded the time limit, the pigment would turn white. People can know whether the medicine has been expired or not by the colour of the capsule. What's more, the efficacy of the medicine will fade away with time going by, you can also judge the efficacy by the colour.